<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Airline - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../node_modules/echarts/map/js/world.js"></script>
<script src="../node_modules/echarts/theme/dark.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    $.getJSON('data/flights.json', function (data) {
        function getAirportCoord(idx) {
            return [data.airports[idx][3], data.airports[idx][4]];
        }

        var routes = data.routes.map(function (airline) {
            return [
                getAirportCoord(airline[1]),
                getAirportCoord(airline[2])
            ];
        });

        chart.setOption({
            geo3D: {
                map: 'world',
                shading: 'realistic',

                environment: '#111',

                realisticMaterial: {
                    roughness: 0.8,
                    metalness: 0
                },
                postEffect: {
                    enable: true
                },
                groundPlane: {
                    show: true,
                    color: '#000'
                },
                light: {
                    main: {
                        intensity: 0,
                        shadow: true,
                        shadowQuality: 'high',
                        alpha: 30
                    },
                    ambient: {
                        intensity: 0
                    },
                    ambientCubemap: {
                        texture: 'asset/canyon.hdr',
                        exposure: 1,
                        diffuseIntensity: 0.5,
                        specularIntensity: 0
                    }
                },
                viewControl: {
                    distance: 50
                },

                itemStyle: {
                    color: '#111'
                },

                regionHeight: 0.5
            },
            series: [{
                type: 'lines3D',

                coordinateSystem: 'geo3D',

                effect: {
                    show: true,
                    trailWidth: 1,
                    trailLength: 0.4
                },

                blendMode: 'lighter',

                lineStyle: {
                    width: 0,
                    color: 'rgb(50, 50, 150)',
                    opacity: 0.1
                },

                data: routes
            }]
        });

        window.onresize = chart.resize;

        window.addEventListener('keydown', function () {
            chart.dispatchAction({
                type: 'lines3DToggleEffect',
                seriesIndex: 0
            });
        });
    });
</script>
</body>
</html>
